Three guys who go by the names Professor So and So, Jojobean and YeaWhatever spend part of each day running elaborate cons on Internet scammers. They consider themselves enforcers of justice, even after they send a man 1400 miles from home, to the least safe place they can bait him: The border of Darfur. The three self-made enforcers tell Ira their story. For more on what they did, along with photos, maps and phone recordings, go here. (29 minutes) Crime • Criminal Justice • Technology